Hi Ed,
I discovered last night that there is a mystery
related to my primary  injector switch: with only the master on, I turn the
primary injector  switch on, and the EM display comes on with 6.5V
"low voltage"  reading. I have to find out how the injector cirquit
can feed power  to the EM?
Any ideas?
Buly
On Oct 11, 2005, at 4:47 PM, Ed Anderson wrote:

> Buly,  Something you might try is setting the
staging manifold  > pressure point at a higher manifold pressure. That way your 550c  > primary should be the only ones on at low and even
medium rpms and  > since the Ec2 appears to work fine with 550s out
of the box, this  > might help. Since you have already gone the mode 3
route, this is  > the only thing I can think of.
>
> I believe the problem is that upon initial start, the EC2 sees  > ambient pressure in the manifold (30"Hg) and
thinks the engine is  > wide open throttle, it checks the fuel map for the
amount of fuel  > to inject for MAP = 30"Hg and  injects fuel (a
lot!) accordingly.   > Normally, this is not a problem as the engine
immediately starts  > and  sucks the manifold pressure down to the
nominal 12-14" Hg (for  > idle) and the fuel injected is adjust accordingly
AND the secondary  > are turned off (until the manifold pressure again
rises to the  > staging point), but with your big injectors having
all four dump  > fuel before the engine is started and running is
probably  > contributing to the problem.
>
> Do you have switches on your injectors and have
you tried starting  > with the secondary injectors turned off??
>
> I presume you don't have the cold start turned on
(accidentally or  > otherwise -shorted).
>
> I presume you have programmed a lean mixture for
start up region .
>
> Ed A
>
>
>
> ----- Original Message ----- From: "Bulent Aliev" > <atlasyts@bellsouth.net>
> To: "Rotary motors in aircraft"
<flyrotary@lancaironline.net>
> Sent: Tuesday, October 11, 2005 4:15 PM
> Subject: [FlyRotary] injector size
>
>
>
>> Hi Guys,
>> For the last few months I have been struggling
with engine  >> flooding  on start up.  Looking at the EC2
manual, it tells me  >> that it comes  pre-set for "standard" Mazda
injectors. I checked  >> the injector charts  and most of the Mazdas have
460 or 550 CC  >> injectors for primary and  secondary. My engine
(Cosmo 13B) comes  >> with 550 cc primary and 850 cc  secondary.
>>
>> I did some Mode3 adjustment on the EC-2 and looks
like it's a bit   >> better, but the trailing plugs get wet if it does
not start right  >> away?
>> Any Ideas?
>> Buly
>>
>> --
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>
>
>
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Bulent Aliev
www.enginegearonline.com
Email: bulent@enginegearonline.com
Ph. 954 557-1019

> > --
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